crypto: img-hash - shift wrapping bug in img_hash_hw_init()

"hdev->req->nbytes" is an unsigned int so we so we lose the upper 3 bits
to the shift wrap bug.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/img-hash.c b/drivers/crypto/img-hash.c
index 601ab35..ad47d0d 100644 (file)
--- a/drivers/crypto/img-hash.c
+++ b/drivers/crypto/img-hash.c
@@ -464,7 +464,7 @@ static int img_hash_hw_init(struct img_hash_dev *hdev)
        img_hash_write(hdev, CR_RESET, CR_RESET_UNSET);
        img_hash_write(hdev, CR_INTENAB, CR_INT_NEW_RESULTS_SET);
 
-       nbits = (hdev->req->nbytes << 3);
+       nbits = (u64)hdev->req->nbytes << 3;
        u = nbits >> 32;
        l = nbits;
        img_hash_write(hdev, CR_MESSAGE_LENGTH_H, u);